Purpose : The availability of quality potato seed is one of the limiting factors to improve the yield and quality. The aim of this research was to obtain the second generation of potato seeds (G2) with the best growth and yield in combinations the sources of shoot cuttings and planting distance. Research Method : The experiment used a factorial randomized complete block design with two factors: the sources of shoot cuttings (plantlet , G0, G1) and planting distance (80 cm x 15 cm, 80 cm x 20 cm and 80 cm x 25 cm) with three replications and the measured responses are component of growth and yield. Findings : The results showed that the sources of shoot cuttings from G0 produced the highest percentage of growth (97.72%), plant height (81.68 cm), canopy width (33.87 cm), maximum tuber weight per plant (237.27 gram), maximum tuber weight per plot (4.15 kg) and the highest number of tubers per plant (7.88) was obtained from the shoot cuttings sources of plantlet. Planting distance (80 cm x 25 cm) tends to be better for tuber weight per plant (171.31 gram) and tuber weight per plot (2.81 kg). Limitations : By using the shoot cuttings sources from plantlet it requires time to acclimatization. Value : It is very important to evaluate of shoot cuttings sources (plantlet, G0, G1) and planting distance so to accelerate the availability of G2 potato seeds in large quantities and quality, besides, using the shoot cutting sources can reduce production cost. The regulation of planting distance is the most important aspects of potato production.
Since variations in chrysanthemums are still limited, Indonesia still imports. An effort to expand the variation can be done through polyploidy techniques using colchicine. Pasopati varieties of the chrysanthemum were propagated in vitro and treated with colchicine and planted in different media compositions to observe performance and obtain superior genotype. Experiment with a factorial pattern that consist of two factors: the composition of the planting medium ( m1 = top soil, m2 = cocopeat, m3 = husk charcoal, m4 = top soil + cocopeat m5 = top soil + husk charcoal, m6 = cocopeat + chaff charcoal) and polyploidy chrysanthemum genotypes (g1 = KAR0, g2 = KAR1, g3 = KAR2, g4 = KAR3, and g5 = KAR4) with two replications was designed. The results showed there were variations in plant height, stem diameter, number of nodes, number of floret, and stalk length on polyploidy Chrysanthemum genotypes due to different planting media. The m4 = top soil + cocopeat can increase plant height, stem diameter, number of nodes, stalk length and number of floret KAR4 genotype.
The purpose of this study was to determine the form of channels, functions, and marketing efficiency of Arabica Coffee. Knowing an efficient marketing channel makes it easy for farmers to choose coffee marketing channels in order to obtain a more rational selling price. The research method used is a survey method with qualitative and quantitative descriptive analysis approaches. The location selection was done purposively with consideration in Sindangkerta Subdistrict, West Bandung Regency, there are two types of Arabica Coffee cultivated by farmers, namely Arabica Coffee and Geographical Indications. Based on the research results, it can be revealed that there are four Arabica Coffee marketing channels: Two Geo- and two non Geo-graphical Indications marketing channels, respectively. In terms of efficiency, channel I in Arabica Coffee marketing is the most efficient geographical indication, because the lowest total Margin value is 69,700, the highest value of marketing efficiency is 2.88 and the Farmer’s Share value is greatest at 10%.
Teknik budidaya hidroponik sebagai upaya intensifikasi, dapat meningkatan efisiensi dan efektivitas peggunaan lahan. Tujuan penelitian ini adalah untuk mempelajari interaksi antara jenis nutrisi dan jenis media tanam terhadap partumbuhan dan hasil tanaman pakcoy (Brassica chinensis L.) Varietas Nauli F-1 secara hidroponik sistem wick. Percobaan dilakukan di Green house Fakultas Kehutanan Universitas Winaya Mukti Sumedang, ketinggian 850 meter di atas permukaan laut, pada bulan Juni hingga Juli 2021. Percobaan menggunakan Rancangan Acak Kelompok (RAK) pola faktorial, terdiri dari dua faktor yaitu faktor pertama jenis nutrisi (n1 = Ab mix 100%, (Kontrol) ; n2 = Ab mix 50% + POC kelinci 50% ; n3 = POC kelinci 100%) dan faktor kedua jenis media tanam (m1 = Rockwool, (Kontrol) ; m2 = Arang sekam; m3 = Cocopeat) serta percobaan di ulang tiga kali. Hasilpercobaan menunjukkan terjadi interaksi antara jenis nutrisi dan jenis media tanam terhadaptinggi tanaman umur 10 HST, 15 HST, 20 HST, 25 HST, 30 HST, jumlah daun umur 10HST, 25 HST, 30 HST dan bobot segar tanaman, sedangkan pada jumlah daun umur 15 HST,20 HST, panjang akar dan luas daun tidak terjadi interaksi. Kombinasi nutrisi Ab mix 100%dan media tanam rockwool memberikan pertumbuhan dan hasil terbaik pada setiap parameter pengamatan.
Purpose : Mycorrhizae are mutualistic symbiosis or association between soil fungi and plant roots which plays an important role in increasing nutrient availability and crop productivity. Potatoes are one of the carbohydrate-producing plants and it can be propagated with mini cuttings from plantlets. The application of mycorrhizal inoculant is expected to increase the yield of potato from mini cuttings. The research was conducted to investigate the effect of mycorrhizal inoculants on degree of root colonization, growth and yield seed of Granola L potato propagated with mini cuttings. The study aimed to increase potatoes seed productivity by application of mycorrhizal inoculant. Research Method : The experiment used was Randomized Block Design consist of six treatments (0, 5 g, 10 g, 15 g, 20 g, and 25 g per plant), and repeated 4 times. The observed responses were degree of roots infection, plant height, leaf number, plant dry weight, the number of tubers and tuber yield. Findings : The results showed that the application of mycorrhizal inoculants was able to increase root colonization by 344% and plant dry weight by 47.49%. Application of 15 g/plant mycorrhizal inoculants increased the plant height at 6 and 8 week after planting by 23.92%, 16.24%, respectively and tuber yield per plant by 24.96%. These results confirm that the application of 15 g per plant mycorrhizal inoculants can be used to enhance the productivity of potato seeds. Limitations : Mycorrhizal colonization was highly affected by the soil physico-chemical properties, the active ingredients and quality of inoculants. Value : This research contribute to increase seed production of potato.
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